Apache HTTP Server: mod_ssl SSLRequire allows .htaccess ap_expr file-function

Date Oct 13, 2026

Type Patch Tuesday

Signal Critical vendor advisory

Vendor / Product Microsoft · Mariner

CVE CVE-2026-59797

Critical vendor advisory CVE-2026-59797

Summary

Apache HTTP Server: mod_ssl SSLRequire allows .htaccess ap_expr file-function Published in October 2026 Security Updates.

Why it matters

Microsoft published this item through its Security Update Guide, making it part of Patch Tuesday triage for affected Windows, cloud, or application estates. EPSS percentile: 43%.

Operator check

Review the Microsoft Security Update Guide entry for CVE-2026-59797. Confirm whether Mariner is deployed, then apply the current security update or documented mitigation. CVSS score: 9.8. EPSS probability: 0.5%; percentile: 43%.

Sources

MSRC 2026-Oct Security Update Guide NVD — CVE-2026-59797 Source reference

PatchBrief uses public sources. It does not scan environments, verify exposure, or replace vendor guidance.

Get watched-vendor alerts Subscribe free Back to feed